Spotify, Rdio or MOG: What Streaming Music Service Do You Use?

News spread this morning that MOG has been purchased by HTC/Beats Audio for $10 million, which probably was not the payout the Berkeley-based company was hoping for (disclosure: I used to work there once upon a time). And while Spotify appears destined to win the streaming music wars (as far as subscription services go, at least), each service has its own merits. So what service did you end up choosing? Spotify, Rdio or MOG? Maybe even Rhapsody or Slacker?